2191581

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 3706560

約数和(自身を除く): 1514979

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 809, 903, 2427, 2709, 5663, 7281, 16989, 34787, 50967, 104361, 243509, 313083, 730527, 2191581]

約数ペア:

[(1, 2191581), (3, 730527), (7, 313083), (9, 243509), (21, 104361), (43, 50967), (63, 34787), (129, 16989), (301, 7281), (387, 5663), (809, 2709), (903, 2427)]